Hinge-joint.



J, LILLY. HINGE JOINT.

APPLICATION FILED MAY 16, 1911.

Patented June 18, 1912.

2 SHEETS-SHEET 1.

COLUMBIA PLANODRAPH CO.,\VASHINGTON. D. c

J. LILLY.

HINGE JOINT.

APPLICATION FILED MAY 16 1911.

Patented June 18, 1912.

2 SHEETS-SHEET 2f Figil.

COLUMBIA PLANOGRAPH C0.,WASHINOTON, D. c.

UNITED STATES PATENT OFFICE.

JOSEPH LILLY, 0F BIRMINGHAM, ENGLAND.

HINGE-JOINT.

Specification of Letters Patent.

Patented June 18, 1912.

Application filed May 16, 1911. Serial No. 627,640.

Joints, of which the following is a specifi-- cation.

This inventlon relates to lmprovements 1n hmge joints for wind and ram shlelds for motors and the like, and its object is to.

provide an improved construction of looking mechanism in which the several looking parts can adjustably accommodate themselves in any direction to any incoincidence or inequality of the locking teeth or other similar surface, and in which the said lockf ing parts are rearwardly supportedby a solid immovable body.

In my invention, the joint consists briefly of two knuckles or parts each having a central hole, to receive a pin which forms the pivot 0r fulcrum of the joint. One of these knuckles is formed as an eye having all around internal teeth or the like, or plain surface. Upon the other part, and concentrio with the pivot hole a non-circular solof the central screw pin the locking blocks idly supporting projection (having any desired number of non-circular sides), is formed upon, or attached to, its face so as to lie in the central space of the other part when the two are placed together, and whose supporting edges are preferably tapered,

and thus form noncircular spaces between the two parts. These two parts are preferably heldtogether by a plate or the like secured to the non-circular part, with portions of its edge overhanging the circular toothed edge of the other part. I now provide what may be termed the locking key plate, which consists of a circular plate,

through which the central pin is passed having on its outer end a milled head or the like by which it may be rotated. Upon the in side of the plate, a collar is firmly secured upon the pin, but permitting the rotary movement of the pin, while the plate may be stationary. Upon the inner face of this plate locking blocks are loosely carried, that is to say, a certain amount of movement is permitted in any direction. These blocks coincide in shape with the non-circular spaces already described. Hence by means are keywise forced and firmly held to engage with the surrounding teeth or surface, at any desired angle of the arm (or shield). Usually the central binding pin is prevented from entire withdrawal.

In a modification, I may somewhat reverse the position and action of the locking blocks, that is to say, they may be furnished with internal surfaces or teeth to en gage with external teeth or surfaces formed' upon the one knuckle and with an inner surface to simultaneously engage with an inner surface upon the solidly noncircular supporting body, all of which is hereinafter explained.

In order to more clearly explain this my invention I have appended hereunto illustrative sheets of drawings, upon which are figures and numbers of reference, similar numbers referring throughout the several views to the same thing or part, and in which i Figure 1 is a sectional view of my improved joint showing the same in its locked position. Fig. 2 is a similar view to that of Fig. 1, but showing the parts unlocked; Fig. 3 is a plan view of the joint with the locking plate removed; Fig. 4 is an inverted plan view of the locking plate, showing more particularly the locking blocks. Fig. 5 is a plan view and Fig. 6 a sectional view, in detail, of the internally toothed knuckle member. Fig. 7 is a plan view of the knuckle member having the solidly support ing body formed thereon. Fig. 8 is a plan view in detail of the retaining plate, by which the two knuckles are held together. Fig. 9 is a sectional view of themodification of my invention, in which external teeth are used upon the knuckle member. Fig. 10 is a plan view of the modified knuckle member, also showing a plan view of the locking block for the same. Fig. 11 is an inverted plan view of the locking plate, and the locking blocks used in this modification.

Referring to Figs. 1 to 8, the two arms 15 and 16 form the two members which are to be jointed together by means of the two knuckles 17 and 18. The interior of the knuckle 17 is furnished with teeth or notches at 19. The knuckle 18 is furnished upon its upper face with a boss at 20 which movably fits the interior of the knuckle 17 at 21, and upon this boss are shown three upwardly tapered surfaces 22. A central screwthreaded hole is further formed in the knuckle 18 to receive the screw pin 23.

24 is a locking plate, which is preferably made with an overhanging flange 25 so as the better to exclude dust or-dirt from the interior of the joint. The pin 23 is rotatable in this plate but not removable, which is conveniently done by means of a collar 26 with pinching pin 27. Upon the underside of this plate are attached the locking blocks 28, which are three in number to agree with the three surfaces 22, and further adapted to fit into the spaces thus formed between the said surfaces 22 and the teeth 19 (see Fig. These blocks are held to the plate in any suitable manner, which permits of their required movement, such as that shown in which the pins 29 are rigidly made to fit in the blocks, but the hole 30 in the plate is made as much larger as may be required for the desired amount of play.

31 is a plate by which the two knuckles 17 and 18 are held together, said plate being secured to the knuckle 18 by screws 32, the outer ends 33 of the plate overhanging the surface of the knuckle 17.

I am aware that it has already been proposed to use sliding locking dogs engaging with internal teeth upon the one knuckle, and that such dogs have been moved outward by a moving body acting upon their interior surface, but having no means of sidewise movement to compensate for any incoincidence of the teeth of the block agreeing with the teeth of the knuckle. Furthermore, the moving body at the rear of the blocks has been unsatisfactory by reason of its ready wear and its instability. In this my invention however it will be seen that its action is as follows :-Upon screwing up the pin 23 the blocks 28 are each forced downward between the solid body surface 22 and the ring of teeth 19, and should thesenot register properly with each other, the blocks readily adjust themselves. When screwed home the locking is definite and complete, being backed by the solid central boss on which the surfaces 22 are formed.

Referring to Figs 9 to 11, it will be seen that the knuckles 17 and 18 are practically the same as before, except that upon the knuckle 1'7 the teeth 19 are used upon the exterior; also on the knuckle 18- the solid supporting surfaces 22 are formed internally, so that the locking blocks 28 are made to clipwise engage the external teeth 19 and the internal surfaces 22*. Its locking action however is practicallythe same as that before described.

It will be clearly, understood that although I have shown teeth at 19, and 19 and corresponding teeth upon the locking blocks, I may dispense with such teeth and employ plain surfaces, either of a parallel or conical character.

hat I claim as my invention and desire to secure by Letters Patent is 1. An adjustable hinge joint comprising two main members hingedly engaging with each other, a locking block, a fiat surface on one side of said block adapted to engage a corresponding surface on one of said members, a toothed surface on the other side of the block facing in the opposite direction to said flat surface and adapted to, engage a corresponding surface on the other of said members, means for moving said block axially of the joint to cause said corresponding surfaces to lockingly engage and means for permitting play of said block in a plane at right angles to the axis of the joint.

2. An adjustable hinge joint comprising two main members hingedly engaging with each other a locking plate movable axially of the joint, :1 locking block mounted on said plate but adapted to move laterally thereon, an inner surface on said block adapted to lockingly engage a surface on one-of said members, an outer surface on said block adapted to lockingly engage a surface on the other of said members, and means for moving said locking plate and block axially of the joint.

3. An adjustable hinge joint comprising two main members hingedly engaging with each other, a locking plate movable axially of the joint, a plurality of locking blocks mounted movably on said plate, aflat surface on one side of each of said blocks adapted to engage a corresponding surface on one of said members, a conical surface on the other side of each of the blocks adapted to engage a corresponding surface on the other of said members, and means for moving said locking plate and blocks axially of the joint.

4. An adjustable hinge joint comprising two main members hingedly engaging with each-other, a locking plate movable axially of the joint, a plurality of locking blocks.

mounted movably on said plate, a flat surface on one side of each of said blocks adapted to engage a corresponding surface on one of said members, a toothed surface on the other side of each of the blocks adapted to engage a corresponding surface on the other of said members, andv means for moving said locking plate and block axially of the joint.

5. An adjustable hinge joint comprising two main members hinged to each other by means of a flanged boss on one entering a corresponding recess on the other, a looking plate arranged concentrically with said boss, a plurality of blocks movably mounted on said locking plate, a retaining plate fixed to said bossand overlapping a part of the other main member so as to prevent relative axial movement between said main members, a fiat surface on the inner side of each of said blocks adapted to engage a corresponding surface on the boss of the said main member, a toothed, conical surface on the outer side of each of said blocks adapted to engage a corresponding surface plate so as to force said engaging surfaces 10 into locking engagement.

In testimony whereof I have signed my name to this specification in the presence of tWo subscribing Witnesses.

JOSEPH LILLY.

Witnesses H. R. KERsLAKE, J. B. HAYWARD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

